001/*
002 * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package com.oracle.graal.hotspot.nodes;
024
025import jdk.internal.jvmci.meta.*;
026
027import com.oracle.graal.compiler.common.type.*;
028import com.oracle.graal.graph.*;
029import com.oracle.graal.hotspot.*;
030import com.oracle.graal.hotspot.stubs.*;
031import com.oracle.graal.nodeinfo.*;
032import com.oracle.graal.nodes.*;
033import com.oracle.graal.nodes.spi.*;
034import com.oracle.graal.word.*;
035
036/**
037 * Emits code to leave (pop) the current low-level stack frame which is being deoptimized. This node
038 * is only used in {@link DeoptimizationStub}.
039 */
040@NodeInfo
041public final class LeaveDeoptimizedStackFrameNode extends FixedWithNextNode implements LIRLowerable {
042
043    public static final NodeClass<LeaveDeoptimizedStackFrameNode> TYPE = NodeClass.create(LeaveDeoptimizedStackFrameNode.class);
044    @Input ValueNode frameSize;
045    @Input ValueNode initialInfo;
046
047    public LeaveDeoptimizedStackFrameNode(ValueNode frameSize, ValueNode initialInfo) {
048        super(TYPE, StampFactory.forVoid());
049        this.frameSize = frameSize;
050        this.initialInfo = initialInfo;
051    }
052
053    @Override
054    public void generate(NodeLIRBuilderTool gen) {
055        Value frameSizeValue = gen.operand(frameSize);
056        Value initialInfoValue = gen.operand(initialInfo);
057        ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitLeaveDeoptimizedStackFrame(frameSizeValue, initialInfoValue);
058    }
059
060    @NodeIntrinsic
061    public static native void leaveDeoptimizedStackFrame(int frameSize, Word initialInfo);
062}